The Rangers have added right-handed pitcher Jason Jennings to the 40-man roster. To make room, they designated right-handed pitcher Armando Galarraga for assignment.
Galarraga, 26, was 9-6 with a 4.02 ERA in 23 games last season with Double-A Frisco. He was acquired by the Rangers in the December 2005 deal that sent Alfonso Soriano to Washington. The Rangers also got outfielders Brad Wilkerson and Terrmel Sledge.